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COMPARATOR CIRCUIT PROVIDED WITH DIFFERENTIAL AMPLIFIER MAKING LOGICAL JUDGMENT BY COMPARING INPUT VOLTAGE WITH REFERENCE VOLTAGE
COMPARATOR CIRCUIT PROVIDED WITH DIFFERENTIAL AMPLIFIER MAKING LOGICAL JUDGMENT BY COMPARING INPUT VOLTAGE WITH REFERENCE VOLTAGE
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机译:通过将输入电压与参考电压进行比较,可为差分放大器提供逻辑判断的比较器电路
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摘要
In a comparator circuit having a differential amplifier, which makes a logical judgment by comparing an input voltage with a reference voltage, generates and outputs a resulting output voltage thereof, a current source generates and supplies a bias current of a predetermined minute current to the differential amplifier, and a first inverter circuit inverts a differential voltage from the differential amplifier. An adaptive bias current generator circuit detects the bias current of the current source, and a through current of the first inverter circuit. The adaptive bias current generator circuit generates and supplies an adaptive bias current for executing adaptive bias current control to the differential amplifier to allow the differential amplifier to operate with the bias current upon no logical judgment, and to allow the differential amplifier to operate by using the adaptive bias current obtained by increasing the bias current upon logical judgment.
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